1.

An electron in an excited state of hydrogen atom absorbs 2.5 times the energy needed to unboundthe electron and moves with a wavelength of 5.416 Å (h = 6.6xx10^(-34) Js) The kinetic energy of the electron is

Answer»

3.4 eV
5.1 eV
13.6 eV
10.2 eV

SOLUTION :`E= hupsilon + 1/2 mv^2 , X XX 2.5 = x + (hc)/(LAMBDA)`


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